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<a class="jxr_linenumber" name="1" href="#1">1</a>   <em class="jxr_comment">/*</em>
<a class="jxr_linenumber" name="2" href="#2">2</a>   <em class="jxr_comment"> *  Licensed to the Apache Software Foundation (ASF) under one</em>
<a class="jxr_linenumber" name="3" href="#3">3</a>   <em class="jxr_comment"> *  or more contributor license agreements.  See the NOTICE file</em>
<a class="jxr_linenumber" name="4" href="#4">4</a>   <em class="jxr_comment"> *  distributed with this work for additional information</em>
<a class="jxr_linenumber" name="5" href="#5">5</a>   <em class="jxr_comment"> *  regarding copyright ownership.  The ASF licenses this file</em>
<a class="jxr_linenumber" name="6" href="#6">6</a>   <em class="jxr_comment"> *  to you under the Apache License, Version 2.0 (the</em>
<a class="jxr_linenumber" name="7" href="#7">7</a>   <em class="jxr_comment"> *  "License"); you may not use this file except in compliance</em>
<a class="jxr_linenumber" name="8" href="#8">8</a>   <em class="jxr_comment"> *  with the License.  You may obtain a copy of the License at</em>
<a class="jxr_linenumber" name="9" href="#9">9</a>   <em class="jxr_comment"> *</em>
<a class="jxr_linenumber" name="10" href="#10">10</a>  <em class="jxr_comment"> *    <a href="http://www.apache.org/licenses/LICENSE-2.0" target="alexandria_uri">http://www.apache.org/licenses/LICENSE-2.0</a></em>
<a class="jxr_linenumber" name="11" href="#11">11</a>  <em class="jxr_comment"> *</em>
<a class="jxr_linenumber" name="12" href="#12">12</a>  <em class="jxr_comment"> *  Unless required by applicable law or agreed to in writing,</em>
<a class="jxr_linenumber" name="13" href="#13">13</a>  <em class="jxr_comment"> *  software distributed under the License is distributed on an</em>
<a class="jxr_linenumber" name="14" href="#14">14</a>  <em class="jxr_comment"> *  "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY</em>
<a class="jxr_linenumber" name="15" href="#15">15</a>  <em class="jxr_comment"> *  KIND, either express or implied.  See the License for the</em>
<a class="jxr_linenumber" name="16" href="#16">16</a>  <em class="jxr_comment"> *  specific language governing permissions and limitations</em>
<a class="jxr_linenumber" name="17" href="#17">17</a>  <em class="jxr_comment"> *  under the License.</em>
<a class="jxr_linenumber" name="18" href="#18">18</a>  <em class="jxr_comment"> *</em>
<a class="jxr_linenumber" name="19" href="#19">19</a>  <em class="jxr_comment"> */</em>
<a class="jxr_linenumber" name="20" href="#20">20</a>  <strong class="jxr_keyword">package</strong> org.apache.mina.proxy.utils;
<a class="jxr_linenumber" name="21" href="#21">21</a>  
<a class="jxr_linenumber" name="22" href="#22">22</a>  <strong class="jxr_keyword">import</strong> java.io.ByteArrayOutputStream;
<a class="jxr_linenumber" name="23" href="#23">23</a>  <strong class="jxr_keyword">import</strong> java.io.UnsupportedEncodingException;
<a class="jxr_linenumber" name="24" href="#24">24</a>  <strong class="jxr_keyword">import</strong> java.util.ArrayList;
<a class="jxr_linenumber" name="25" href="#25">25</a>  <strong class="jxr_keyword">import</strong> java.util.HashMap;
<a class="jxr_linenumber" name="26" href="#26">26</a>  <strong class="jxr_keyword">import</strong> java.util.List;
<a class="jxr_linenumber" name="27" href="#27">27</a>  <strong class="jxr_keyword">import</strong> java.util.Map;
<a class="jxr_linenumber" name="28" href="#28">28</a>  
<a class="jxr_linenumber" name="29" href="#29">29</a>  <strong class="jxr_keyword">import</strong> javax.security.sasl.AuthenticationException;
<a class="jxr_linenumber" name="30" href="#30">30</a>  <strong class="jxr_keyword">import</strong> javax.security.sasl.SaslException;
<a class="jxr_linenumber" name="31" href="#31">31</a>  
<a class="jxr_linenumber" name="32" href="#32">32</a>  <em class="jxr_javadoccomment">/**</em>
<a class="jxr_linenumber" name="33" href="#33">33</a>  <em class="jxr_javadoccomment"> * StringUtilities.java - Various methods to handle strings.</em>
<a class="jxr_linenumber" name="34" href="#34">34</a>  <em class="jxr_javadoccomment"> * </em>
<a class="jxr_linenumber" name="35" href="#35">35</a>  <em class="jxr_javadoccomment"> * @author &lt;a href="<a href="http://mina.apache.org" target="alexandria_uri">http://mina.apache.org</a>"&gt;Apache MINA Project&lt;/a&gt;</em>
<a class="jxr_linenumber" name="36" href="#36">36</a>  <em class="jxr_javadoccomment"> * @since MINA 2.0.0-M3</em>
<a class="jxr_linenumber" name="37" href="#37">37</a>  <em class="jxr_javadoccomment"> */</em>
<a class="jxr_linenumber" name="38" href="#38">38</a>  <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">class</strong> <a href="../../../../../org/apache/mina/proxy/utils/StringUtilities.html">StringUtilities</a> {
<a class="jxr_linenumber" name="39" href="#39">39</a>  
<a class="jxr_linenumber" name="40" href="#40">40</a>      <em class="jxr_javadoccomment">/**</em>
<a class="jxr_linenumber" name="41" href="#41">41</a>  <em class="jxr_javadoccomment">     * A directive is a parameter of the digest authentication process.</em>
<a class="jxr_linenumber" name="42" href="#42">42</a>  <em class="jxr_javadoccomment">     * Returns the value of a directive from the map. If mandatory is true and the </em>
<a class="jxr_linenumber" name="43" href="#43">43</a>  <em class="jxr_javadoccomment">     * value is null, then it throws an {@link AuthenticationException}.</em>
<a class="jxr_linenumber" name="44" href="#44">44</a>  <em class="jxr_javadoccomment">     *  </em>
<a class="jxr_linenumber" name="45" href="#45">45</a>  <em class="jxr_javadoccomment">     * @param directivesMap the directive's map </em>
<a class="jxr_linenumber" name="46" href="#46">46</a>  <em class="jxr_javadoccomment">     * @param directive the name of the directive we want to retrieve</em>
<a class="jxr_linenumber" name="47" href="#47">47</a>  <em class="jxr_javadoccomment">     * @param mandatory is the directive mandatory</em>
<a class="jxr_linenumber" name="48" href="#48">48</a>  <em class="jxr_javadoccomment">     * @return the mandatory value as a String</em>
<a class="jxr_linenumber" name="49" href="#49">49</a>  <em class="jxr_javadoccomment">     * @throws AuthenticationException if mandatory is true and if </em>
<a class="jxr_linenumber" name="50" href="#50">50</a>  <em class="jxr_javadoccomment">     * directivesMap.get(directive) == null</em>
<a class="jxr_linenumber" name="51" href="#51">51</a>  <em class="jxr_javadoccomment">     */</em>
<a class="jxr_linenumber" name="52" href="#52">52</a>      <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">static</strong> String getDirectiveValue(
<a class="jxr_linenumber" name="53" href="#53">53</a>              HashMap&lt;String, String&gt; directivesMap, String directive,
<a class="jxr_linenumber" name="54" href="#54">54</a>              <strong class="jxr_keyword">boolean</strong> mandatory) <strong class="jxr_keyword">throws</strong> AuthenticationException {
<a class="jxr_linenumber" name="55" href="#55">55</a>          String value = directivesMap.get(directive);
<a class="jxr_linenumber" name="56" href="#56">56</a>          <strong class="jxr_keyword">if</strong> (value == <strong class="jxr_keyword">null</strong>) {
<a class="jxr_linenumber" name="57" href="#57">57</a>              <strong class="jxr_keyword">if</strong> (mandatory) {
<a class="jxr_linenumber" name="58" href="#58">58</a>                  <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> AuthenticationException(<span class="jxr_string">"\&quot;"</span> + directive
<a class="jxr_linenumber" name="59" href="#59">59</a>                          + <span class="jxr_string">"\&quot; mandatory directive is missing"</span>);
<a class="jxr_linenumber" name="60" href="#60">60</a>              }
<a class="jxr_linenumber" name="61" href="#61">61</a>  
<a class="jxr_linenumber" name="62" href="#62">62</a>              <strong class="jxr_keyword">return</strong> <span class="jxr_string">""</span>;
<a class="jxr_linenumber" name="63" href="#63">63</a>          }
<a class="jxr_linenumber" name="64" href="#64">64</a>  
<a class="jxr_linenumber" name="65" href="#65">65</a>          <strong class="jxr_keyword">return</strong> value;
<a class="jxr_linenumber" name="66" href="#66">66</a>      }
<a class="jxr_linenumber" name="67" href="#67">67</a>  
<a class="jxr_linenumber" name="68" href="#68">68</a>      <em class="jxr_javadoccomment">/**</em>
<a class="jxr_linenumber" name="69" href="#69">69</a>  <em class="jxr_javadoccomment">     * Copy the directive to the {@link StringBuilder} if not null.</em>
<a class="jxr_linenumber" name="70" href="#70">70</a>  <em class="jxr_javadoccomment">     * (A directive is a parameter of the digest authentication process.)</em>
<a class="jxr_linenumber" name="71" href="#71">71</a>  <em class="jxr_javadoccomment">     * </em>
<a class="jxr_linenumber" name="72" href="#72">72</a>  <em class="jxr_javadoccomment">     * @param directives the directives map</em>
<a class="jxr_linenumber" name="73" href="#73">73</a>  <em class="jxr_javadoccomment">     * @param sb the output buffer</em>
<a class="jxr_linenumber" name="74" href="#74">74</a>  <em class="jxr_javadoccomment">     * @param directive the directive name to look for</em>
<a class="jxr_linenumber" name="75" href="#75">75</a>  <em class="jxr_javadoccomment">     */</em>
<a class="jxr_linenumber" name="76" href="#76">76</a>      <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">void</strong> copyDirective(HashMap&lt;String, String&gt; directives,
<a class="jxr_linenumber" name="77" href="#77">77</a>              StringBuilder sb, String directive) {
<a class="jxr_linenumber" name="78" href="#78">78</a>          String directiveValue = directives.get(directive);
<a class="jxr_linenumber" name="79" href="#79">79</a>          <strong class="jxr_keyword">if</strong> (directiveValue != <strong class="jxr_keyword">null</strong>) {
<a class="jxr_linenumber" name="80" href="#80">80</a>              sb.append(directive).append(<span class="jxr_string">" = \&quot;"</span>).append(directiveValue).append(
<a class="jxr_linenumber" name="81" href="#81">81</a>                      <span class="jxr_string">"\&quot;, "</span>);
<a class="jxr_linenumber" name="82" href="#82">82</a>          }
<a class="jxr_linenumber" name="83" href="#83">83</a>      }
<a class="jxr_linenumber" name="84" href="#84">84</a>  
<a class="jxr_linenumber" name="85" href="#85">85</a>      <em class="jxr_javadoccomment">/**</em>
<a class="jxr_linenumber" name="86" href="#86">86</a>  <em class="jxr_javadoccomment">     * Copy the directive from the source map to the destination map, if it's</em>
<a class="jxr_linenumber" name="87" href="#87">87</a>  <em class="jxr_javadoccomment">     * value isn't null.</em>
<a class="jxr_linenumber" name="88" href="#88">88</a>  <em class="jxr_javadoccomment">     * (A directive is a parameter of the digest authentication process.)</em>
<a class="jxr_linenumber" name="89" href="#89">89</a>  <em class="jxr_javadoccomment">     * </em>
<a class="jxr_linenumber" name="90" href="#90">90</a>  <em class="jxr_javadoccomment">     * @param src the source map</em>
<a class="jxr_linenumber" name="91" href="#91">91</a>  <em class="jxr_javadoccomment">     * @param dst the destination map</em>
<a class="jxr_linenumber" name="92" href="#92">92</a>  <em class="jxr_javadoccomment">     * @param directive the directive name</em>
<a class="jxr_linenumber" name="93" href="#93">93</a>  <em class="jxr_javadoccomment">     * @return the value of the copied directive</em>
<a class="jxr_linenumber" name="94" href="#94">94</a>  <em class="jxr_javadoccomment">     */</em>
<a class="jxr_linenumber" name="95" href="#95">95</a>      <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">static</strong> String copyDirective(HashMap&lt;String, String&gt; src,
<a class="jxr_linenumber" name="96" href="#96">96</a>              HashMap&lt;String, String&gt; dst, String directive) {
<a class="jxr_linenumber" name="97" href="#97">97</a>          String directiveValue = src.get(directive);
<a class="jxr_linenumber" name="98" href="#98">98</a>          <strong class="jxr_keyword">if</strong> (directiveValue != <strong class="jxr_keyword">null</strong>) {
<a class="jxr_linenumber" name="99" href="#99">99</a>              dst.put(directive, directiveValue);
<a class="jxr_linenumber" name="100" href="#100">100</a>         }
<a class="jxr_linenumber" name="101" href="#101">101</a> 
<a class="jxr_linenumber" name="102" href="#102">102</a>         <strong class="jxr_keyword">return</strong> directiveValue;
<a class="jxr_linenumber" name="103" href="#103">103</a>     }
<a class="jxr_linenumber" name="104" href="#104">104</a> 
<a class="jxr_linenumber" name="105" href="#105">105</a>     <em class="jxr_javadoccomment">/**</em>
<a class="jxr_linenumber" name="106" href="#106">106</a> <em class="jxr_javadoccomment">     * Parses digest-challenge string, extracting each token and value(s). Each token</em>
<a class="jxr_linenumber" name="107" href="#107">107</a> <em class="jxr_javadoccomment">     * is a directive.</em>
<a class="jxr_linenumber" name="108" href="#108">108</a> <em class="jxr_javadoccomment">     *</em>
<a class="jxr_linenumber" name="109" href="#109">109</a> <em class="jxr_javadoccomment">     * @param buf A non-null digest-challenge string.</em>
<a class="jxr_linenumber" name="110" href="#110">110</a> <em class="jxr_javadoccomment">     * @throws UnsupportedEncodingException </em>
<a class="jxr_linenumber" name="111" href="#111">111</a> <em class="jxr_javadoccomment">     * @throws SaslException if the String cannot be parsed according to RFC 2831</em>
<a class="jxr_linenumber" name="112" href="#112">112</a> <em class="jxr_javadoccomment">     */</em>
<a class="jxr_linenumber" name="113" href="#113">113</a>     <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">static</strong> HashMap&lt;String, String&gt; parseDirectives(byte[] buf)
<a class="jxr_linenumber" name="114" href="#114">114</a>             <strong class="jxr_keyword">throws</strong> SaslException {
<a class="jxr_linenumber" name="115" href="#115">115</a>         HashMap&lt;String, String&gt; map = <strong class="jxr_keyword">new</strong> HashMap&lt;String, String&gt;();
<a class="jxr_linenumber" name="116" href="#116">116</a>         <strong class="jxr_keyword">boolean</strong> gettingKey = <strong class="jxr_keyword">true</strong>;
<a class="jxr_linenumber" name="117" href="#117">117</a>         <strong class="jxr_keyword">boolean</strong> gettingQuotedValue = false;
<a class="jxr_linenumber" name="118" href="#118">118</a>         <strong class="jxr_keyword">boolean</strong> expectSeparator = false;
<a class="jxr_linenumber" name="119" href="#119">119</a>         byte bch;
<a class="jxr_linenumber" name="120" href="#120">120</a> 
<a class="jxr_linenumber" name="121" href="#121">121</a>         ByteArrayOutputStream key = <strong class="jxr_keyword">new</strong> ByteArrayOutputStream(10);
<a class="jxr_linenumber" name="122" href="#122">122</a>         ByteArrayOutputStream value = <strong class="jxr_keyword">new</strong> ByteArrayOutputStream(10);
<a class="jxr_linenumber" name="123" href="#123">123</a> 
<a class="jxr_linenumber" name="124" href="#124">124</a>         <strong class="jxr_keyword">int</strong> i = skipLws(buf, 0);
<a class="jxr_linenumber" name="125" href="#125">125</a>         <strong class="jxr_keyword">while</strong> (i &lt; buf.length) {
<a class="jxr_linenumber" name="126" href="#126">126</a>             bch = buf[i];
<a class="jxr_linenumber" name="127" href="#127">127</a> 
<a class="jxr_linenumber" name="128" href="#128">128</a>             <strong class="jxr_keyword">if</strong> (gettingKey) {
<a class="jxr_linenumber" name="129" href="#129">129</a>                 <strong class="jxr_keyword">if</strong> (bch == ',') {
<a class="jxr_linenumber" name="130" href="#130">130</a>                     <strong class="jxr_keyword">if</strong> (key.size() != 0) {
<a class="jxr_linenumber" name="131" href="#131">131</a>                         <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> SaslException(<span class="jxr_string">"Directive key contains a ',':"</span>
<a class="jxr_linenumber" name="132" href="#132">132</a>                                 + key);
<a class="jxr_linenumber" name="133" href="#133">133</a>                     }
<a class="jxr_linenumber" name="134" href="#134">134</a> 
<a class="jxr_linenumber" name="135" href="#135">135</a>                     <em class="jxr_comment">// Empty element, skip separator and lws</em>
<a class="jxr_linenumber" name="136" href="#136">136</a>                     i = skipLws(buf, i + 1);
<a class="jxr_linenumber" name="137" href="#137">137</a>                 } <strong class="jxr_keyword">else</strong> <strong class="jxr_keyword">if</strong> (bch == '=') {
<a class="jxr_linenumber" name="138" href="#138">138</a>                     <strong class="jxr_keyword">if</strong> (key.size() == 0) {
<a class="jxr_linenumber" name="139" href="#139">139</a>                         <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> SaslException(<span class="jxr_string">"Empty directive key"</span>);
<a class="jxr_linenumber" name="140" href="#140">140</a>                     }
<a class="jxr_linenumber" name="141" href="#141">141</a> 
<a class="jxr_linenumber" name="142" href="#142">142</a>                     gettingKey = false; <em class="jxr_comment">// Termination of key</em>
<a class="jxr_linenumber" name="143" href="#143">143</a>                     i = skipLws(buf, i + 1); <em class="jxr_comment">// Skip to next non whitespace</em>
<a class="jxr_linenumber" name="144" href="#144">144</a> 
<a class="jxr_linenumber" name="145" href="#145">145</a>                     <em class="jxr_comment">// Check whether value is quoted</em>
<a class="jxr_linenumber" name="146" href="#146">146</a>                     <strong class="jxr_keyword">if</strong> (i &lt; buf.length) {
<a class="jxr_linenumber" name="147" href="#147">147</a>                         <strong class="jxr_keyword">if</strong> (buf[i] == '&quot;') {
<a class="jxr_linenumber" name="148" href="#148">148</a>                             gettingQuotedValue = <strong class="jxr_keyword">true</strong>;
<a class="jxr_linenumber" name="149" href="#149">149</a>                             ++i; <em class="jxr_comment">// Skip quote</em>
<a class="jxr_linenumber" name="150" href="#150">150</a>                         }
<a class="jxr_linenumber" name="151" href="#151">151</a>                     } <strong class="jxr_keyword">else</strong> {
<a class="jxr_linenumber" name="152" href="#152">152</a>                         <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> SaslException(<span class="jxr_string">"Valueless directive found: "</span>
<a class="jxr_linenumber" name="153" href="#153">153</a>                                 + key.toString());
<a class="jxr_linenumber" name="154" href="#154">154</a>                     }
<a class="jxr_linenumber" name="155" href="#155">155</a>                 } <strong class="jxr_keyword">else</strong> <strong class="jxr_keyword">if</strong> (isLws(bch)) {
<a class="jxr_linenumber" name="156" href="#156">156</a>                     <em class="jxr_comment">// LWS that occurs after key</em>
<a class="jxr_linenumber" name="157" href="#157">157</a>                     i = skipLws(buf, i + 1);
<a class="jxr_linenumber" name="158" href="#158">158</a> 
<a class="jxr_linenumber" name="159" href="#159">159</a>                     <em class="jxr_comment">// Expecting '='</em>
<a class="jxr_linenumber" name="160" href="#160">160</a>                     <strong class="jxr_keyword">if</strong> (i &lt; buf.length) {
<a class="jxr_linenumber" name="161" href="#161">161</a>                         <strong class="jxr_keyword">if</strong> (buf[i] != '=') {
<a class="jxr_linenumber" name="162" href="#162">162</a>                             <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> SaslException(<span class="jxr_string">"'=' expected after key: "</span>
<a class="jxr_linenumber" name="163" href="#163">163</a>                                     + key.toString());
<a class="jxr_linenumber" name="164" href="#164">164</a>                         }
<a class="jxr_linenumber" name="165" href="#165">165</a>                     } <strong class="jxr_keyword">else</strong> {
<a class="jxr_linenumber" name="166" href="#166">166</a>                         <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> SaslException(<span class="jxr_string">"'=' expected after key: "</span>
<a class="jxr_linenumber" name="167" href="#167">167</a>                                 + key.toString());
<a class="jxr_linenumber" name="168" href="#168">168</a>                     }
<a class="jxr_linenumber" name="169" href="#169">169</a>                 } <strong class="jxr_keyword">else</strong> {
<a class="jxr_linenumber" name="170" href="#170">170</a>                     key.write(bch); <em class="jxr_comment">// Append to key</em>
<a class="jxr_linenumber" name="171" href="#171">171</a>                     ++i; <em class="jxr_comment">// Advance</em>
<a class="jxr_linenumber" name="172" href="#172">172</a>                 }
<a class="jxr_linenumber" name="173" href="#173">173</a>             } <strong class="jxr_keyword">else</strong> <strong class="jxr_keyword">if</strong> (gettingQuotedValue) {
<a class="jxr_linenumber" name="174" href="#174">174</a>                 <em class="jxr_comment">// Getting a quoted value</em>
<a class="jxr_linenumber" name="175" href="#175">175</a>                 <strong class="jxr_keyword">if</strong> (bch == '&#92;&#92;') {
<a class="jxr_linenumber" name="176" href="#176">176</a>                     <em class="jxr_comment">// quoted-pair = "\&quot; CHAR ==&gt; CHAR</em>
<a class="jxr_linenumber" name="177" href="#177">177</a>                     ++i; <em class="jxr_comment">// Skip escape</em>
<a class="jxr_linenumber" name="178" href="#178">178</a>                     <strong class="jxr_keyword">if</strong> (i &lt; buf.length) {
<a class="jxr_linenumber" name="179" href="#179">179</a>                         value.write(buf[i]);
<a class="jxr_linenumber" name="180" href="#180">180</a>                         ++i; <em class="jxr_comment">// Advance</em>
<a class="jxr_linenumber" name="181" href="#181">181</a>                     } <strong class="jxr_keyword">else</strong> {
<a class="jxr_linenumber" name="182" href="#182">182</a>                         <em class="jxr_comment">// Trailing escape in a quoted value</em>
<a class="jxr_linenumber" name="183" href="#183">183</a>                         <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> SaslException(
<a class="jxr_linenumber" name="184" href="#184">184</a>                                 <span class="jxr_string">"Unmatched quote found for directive: "</span>
<a class="jxr_linenumber" name="185" href="#185">185</a>                                         + key.toString() + <span class="jxr_string">" with value: "</span>
<a class="jxr_linenumber" name="186" href="#186">186</a>                                         + value.toString());
<a class="jxr_linenumber" name="187" href="#187">187</a>                     }
<a class="jxr_linenumber" name="188" href="#188">188</a>                 } <strong class="jxr_keyword">else</strong> <strong class="jxr_keyword">if</strong> (bch == '&quot;') {
<a class="jxr_linenumber" name="189" href="#189">189</a>                     <em class="jxr_comment">// closing quote</em>
<a class="jxr_linenumber" name="190" href="#190">190</a>                     ++i; <em class="jxr_comment">// Skip closing quote</em>
<a class="jxr_linenumber" name="191" href="#191">191</a>                     gettingQuotedValue = false;
<a class="jxr_linenumber" name="192" href="#192">192</a>                     expectSeparator = <strong class="jxr_keyword">true</strong>;
<a class="jxr_linenumber" name="193" href="#193">193</a>                 } <strong class="jxr_keyword">else</strong> {
<a class="jxr_linenumber" name="194" href="#194">194</a>                     value.write(bch);
<a class="jxr_linenumber" name="195" href="#195">195</a>                     ++i; <em class="jxr_comment">// Advance</em>
<a class="jxr_linenumber" name="196" href="#196">196</a>                 }
<a class="jxr_linenumber" name="197" href="#197">197</a>             } <strong class="jxr_keyword">else</strong> <strong class="jxr_keyword">if</strong> (isLws(bch) || bch == ',') {
<a class="jxr_linenumber" name="198" href="#198">198</a>                 <em class="jxr_comment">// Value terminated</em>
<a class="jxr_linenumber" name="199" href="#199">199</a>                 extractDirective(map, key.toString(), value.toString());
<a class="jxr_linenumber" name="200" href="#200">200</a>                 key.reset();
<a class="jxr_linenumber" name="201" href="#201">201</a>                 value.reset();
<a class="jxr_linenumber" name="202" href="#202">202</a>                 gettingKey = <strong class="jxr_keyword">true</strong>;
<a class="jxr_linenumber" name="203" href="#203">203</a>                 gettingQuotedValue = expectSeparator = false;
<a class="jxr_linenumber" name="204" href="#204">204</a>                 i = skipLws(buf, i + 1); <em class="jxr_comment">// Skip separator and LWS</em>
<a class="jxr_linenumber" name="205" href="#205">205</a>             } <strong class="jxr_keyword">else</strong> <strong class="jxr_keyword">if</strong> (expectSeparator) {
<a class="jxr_linenumber" name="206" href="#206">206</a>                 <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> SaslException(
<a class="jxr_linenumber" name="207" href="#207">207</a>                         <span class="jxr_string">"Expecting comma or linear whitespace after quoted string: \&quot;"</span>
<a class="jxr_linenumber" name="208" href="#208">208</a>                                 + value.toString() + <span class="jxr_string">"\&quot;"</span>);
<a class="jxr_linenumber" name="209" href="#209">209</a>             } <strong class="jxr_keyword">else</strong> {
<a class="jxr_linenumber" name="210" href="#210">210</a>                 value.write(bch); <em class="jxr_comment">// Unquoted value</em>
<a class="jxr_linenumber" name="211" href="#211">211</a>                 ++i; <em class="jxr_comment">// Advance</em>
<a class="jxr_linenumber" name="212" href="#212">212</a>             }
<a class="jxr_linenumber" name="213" href="#213">213</a>         }
<a class="jxr_linenumber" name="214" href="#214">214</a> 
<a class="jxr_linenumber" name="215" href="#215">215</a>         <strong class="jxr_keyword">if</strong> (gettingQuotedValue) {
<a class="jxr_linenumber" name="216" href="#216">216</a>             <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> SaslException(<span class="jxr_string">"Unmatched quote found for directive: "</span>
<a class="jxr_linenumber" name="217" href="#217">217</a>                     + key.toString() + <span class="jxr_string">" with value: "</span> + value.toString());
<a class="jxr_linenumber" name="218" href="#218">218</a>         }
<a class="jxr_linenumber" name="219" href="#219">219</a> 
<a class="jxr_linenumber" name="220" href="#220">220</a>         <em class="jxr_comment">// Get last pair</em>
<a class="jxr_linenumber" name="221" href="#221">221</a>         <strong class="jxr_keyword">if</strong> (key.size() &gt; 0) {
<a class="jxr_linenumber" name="222" href="#222">222</a>             extractDirective(map, key.toString(), value.toString());
<a class="jxr_linenumber" name="223" href="#223">223</a>         }
<a class="jxr_linenumber" name="224" href="#224">224</a> 
<a class="jxr_linenumber" name="225" href="#225">225</a>         <strong class="jxr_keyword">return</strong> map;
<a class="jxr_linenumber" name="226" href="#226">226</a>     }
<a class="jxr_linenumber" name="227" href="#227">227</a> 
<a class="jxr_linenumber" name="228" href="#228">228</a>     <em class="jxr_javadoccomment">/**</em>
<a class="jxr_linenumber" name="229" href="#229">229</a> <em class="jxr_javadoccomment">     * Processes directive/value pairs from the digest-challenge and</em>
<a class="jxr_linenumber" name="230" href="#230">230</a> <em class="jxr_javadoccomment">     * fill out the provided map.</em>
<a class="jxr_linenumber" name="231" href="#231">231</a> <em class="jxr_javadoccomment">     * </em>
<a class="jxr_linenumber" name="232" href="#232">232</a> <em class="jxr_javadoccomment">     * @param key A non-null String challenge token name.</em>
<a class="jxr_linenumber" name="233" href="#233">233</a> <em class="jxr_javadoccomment">     * @param value A non-null String token value.</em>
<a class="jxr_linenumber" name="234" href="#234">234</a> <em class="jxr_javadoccomment">     * @throws SaslException if either the key or the value is null or</em>
<a class="jxr_linenumber" name="235" href="#235">235</a> <em class="jxr_javadoccomment">     * if the key already has a value. </em>
<a class="jxr_linenumber" name="236" href="#236">236</a> <em class="jxr_javadoccomment">     */</em>
<a class="jxr_linenumber" name="237" href="#237">237</a>     <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">void</strong> extractDirective(HashMap&lt;String, String&gt; map,
<a class="jxr_linenumber" name="238" href="#238">238</a>             String key, String value) <strong class="jxr_keyword">throws</strong> SaslException {
<a class="jxr_linenumber" name="239" href="#239">239</a>         <strong class="jxr_keyword">if</strong> (map.get(key) != <strong class="jxr_keyword">null</strong>) {
<a class="jxr_linenumber" name="240" href="#240">240</a>             <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> SaslException(<span class="jxr_string">"Peer sent more than one "</span> + key
<a class="jxr_linenumber" name="241" href="#241">241</a>                     + <span class="jxr_string">" directive"</span>);
<a class="jxr_linenumber" name="242" href="#242">242</a>         }
<a class="jxr_linenumber" name="243" href="#243">243</a> 
<a class="jxr_linenumber" name="244" href="#244">244</a>         map.put(key, value);
<a class="jxr_linenumber" name="245" href="#245">245</a>     }
<a class="jxr_linenumber" name="246" href="#246">246</a> 
<a class="jxr_linenumber" name="247" href="#247">247</a>     <em class="jxr_javadoccomment">/**</em>
<a class="jxr_linenumber" name="248" href="#248">248</a> <em class="jxr_javadoccomment">     * Is character a linear white space ?</em>
<a class="jxr_linenumber" name="249" href="#249">249</a> <em class="jxr_javadoccomment">     * LWS            = [CRLF] 1*( SP | HT )</em>
<a class="jxr_linenumber" name="250" href="#250">250</a> <em class="jxr_javadoccomment">     * Note that we're checking individual bytes instead of CRLF</em>
<a class="jxr_linenumber" name="251" href="#251">251</a> <em class="jxr_javadoccomment">     * </em>
<a class="jxr_linenumber" name="252" href="#252">252</a> <em class="jxr_javadoccomment">     * @param b the byte to check</em>
<a class="jxr_linenumber" name="253" href="#253">253</a> <em class="jxr_javadoccomment">     * @return &lt;code&gt;true&lt;/code&gt; if it's a linear white space</em>
<a class="jxr_linenumber" name="254" href="#254">254</a> <em class="jxr_javadoccomment">     */</em>
<a class="jxr_linenumber" name="255" href="#255">255</a>     <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">boolean</strong> isLws(byte b) {
<a class="jxr_linenumber" name="256" href="#256">256</a>         <strong class="jxr_keyword">switch</strong> (b) {
<a class="jxr_linenumber" name="257" href="#257">257</a>         <strong class="jxr_keyword">case</strong> 13: <em class="jxr_comment">// US-ASCII CR, carriage return</em>
<a class="jxr_linenumber" name="258" href="#258">258</a>         <strong class="jxr_keyword">case</strong> 10: <em class="jxr_comment">// US-ASCII LF, line feed</em>
<a class="jxr_linenumber" name="259" href="#259">259</a>         <strong class="jxr_keyword">case</strong> 32: <em class="jxr_comment">// US-ASCII SP, space</em>
<a class="jxr_linenumber" name="260" href="#260">260</a>         <strong class="jxr_keyword">case</strong> 9: <em class="jxr_comment">// US-ASCII HT, horizontal-tab</em>
<a class="jxr_linenumber" name="261" href="#261">261</a>             <strong class="jxr_keyword">return</strong> <strong class="jxr_keyword">true</strong>;
<a class="jxr_linenumber" name="262" href="#262">262</a>         }
<a class="jxr_linenumber" name="263" href="#263">263</a> 
<a class="jxr_linenumber" name="264" href="#264">264</a>         <strong class="jxr_keyword">return</strong> false;
<a class="jxr_linenumber" name="265" href="#265">265</a>     }
<a class="jxr_linenumber" name="266" href="#266">266</a> 
<a class="jxr_linenumber" name="267" href="#267">267</a>     <em class="jxr_javadoccomment">/**</em>
<a class="jxr_linenumber" name="268" href="#268">268</a> <em class="jxr_javadoccomment">     * Skip all linear white spaces</em>
<a class="jxr_linenumber" name="269" href="#269">269</a> <em class="jxr_javadoccomment">     * </em>
<a class="jxr_linenumber" name="270" href="#270">270</a> <em class="jxr_javadoccomment">     * @param buf the buf which is being scanned for lws</em>
<a class="jxr_linenumber" name="271" href="#271">271</a> <em class="jxr_javadoccomment">     * @param start the offset to start at</em>
<a class="jxr_linenumber" name="272" href="#272">272</a> <em class="jxr_javadoccomment">     * @return the next position in buf which isn't a lws character</em>
<a class="jxr_linenumber" name="273" href="#273">273</a> <em class="jxr_javadoccomment">     */</em>
<a class="jxr_linenumber" name="274" href="#274">274</a>     <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">int</strong> skipLws(byte[] buf, <strong class="jxr_keyword">int</strong> start) {
<a class="jxr_linenumber" name="275" href="#275">275</a>         <strong class="jxr_keyword">int</strong> i;
<a class="jxr_linenumber" name="276" href="#276">276</a> 
<a class="jxr_linenumber" name="277" href="#277">277</a>         <strong class="jxr_keyword">for</strong> (i = start; i &lt; buf.length; i++) {
<a class="jxr_linenumber" name="278" href="#278">278</a>             <strong class="jxr_keyword">if</strong> (!isLws(buf[i])) {
<a class="jxr_linenumber" name="279" href="#279">279</a>                 <strong class="jxr_keyword">return</strong> i;
<a class="jxr_linenumber" name="280" href="#280">280</a>             }
<a class="jxr_linenumber" name="281" href="#281">281</a>         }
<a class="jxr_linenumber" name="282" href="#282">282</a> 
<a class="jxr_linenumber" name="283" href="#283">283</a>         <strong class="jxr_keyword">return</strong> i;
<a class="jxr_linenumber" name="284" href="#284">284</a>     }
<a class="jxr_linenumber" name="285" href="#285">285</a> 
<a class="jxr_linenumber" name="286" href="#286">286</a>     <em class="jxr_javadoccomment">/**</em>
<a class="jxr_linenumber" name="287" href="#287">287</a> <em class="jxr_javadoccomment">     * Used to convert username-value, passwd or realm to 8859_1 encoding</em>
<a class="jxr_linenumber" name="288" href="#288">288</a> <em class="jxr_javadoccomment">     * if all chars in string are within the 8859_1 (Latin 1) encoding range.</em>
<a class="jxr_linenumber" name="289" href="#289">289</a> <em class="jxr_javadoccomment">     * </em>
<a class="jxr_linenumber" name="290" href="#290">290</a> <em class="jxr_javadoccomment">     * @param str a non-null String</em>
<a class="jxr_linenumber" name="291" href="#291">291</a> <em class="jxr_javadoccomment">     * @return a non-null String containing the 8859_1 encoded string</em>
<a class="jxr_linenumber" name="292" href="#292">292</a> <em class="jxr_javadoccomment">     * @throws AuthenticationException </em>
<a class="jxr_linenumber" name="293" href="#293">293</a> <em class="jxr_javadoccomment">     */</em>
<a class="jxr_linenumber" name="294" href="#294">294</a>     <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">static</strong> String stringTo8859_1(String str)
<a class="jxr_linenumber" name="295" href="#295">295</a>             <strong class="jxr_keyword">throws</strong> UnsupportedEncodingException {
<a class="jxr_linenumber" name="296" href="#296">296</a>         <strong class="jxr_keyword">if</strong> (str == <strong class="jxr_keyword">null</strong>) {
<a class="jxr_linenumber" name="297" href="#297">297</a>             <strong class="jxr_keyword">return</strong> <span class="jxr_string">""</span>;
<a class="jxr_linenumber" name="298" href="#298">298</a>         }
<a class="jxr_linenumber" name="299" href="#299">299</a> 
<a class="jxr_linenumber" name="300" href="#300">300</a>         <strong class="jxr_keyword">return</strong> <strong class="jxr_keyword">new</strong> String(str.getBytes(<span class="jxr_string">"UTF8"</span>), <span class="jxr_string">"8859_1"</span>);
<a class="jxr_linenumber" name="301" href="#301">301</a>     }
<a class="jxr_linenumber" name="302" href="#302">302</a> 
<a class="jxr_linenumber" name="303" href="#303">303</a>     <em class="jxr_javadoccomment">/**</em>
<a class="jxr_linenumber" name="304" href="#304">304</a> <em class="jxr_javadoccomment">     * Returns the value of the named header. If it has multiple values</em>
<a class="jxr_linenumber" name="305" href="#305">305</a> <em class="jxr_javadoccomment">     * then an {@link IllegalArgumentException} is thrown</em>
<a class="jxr_linenumber" name="306" href="#306">306</a> <em class="jxr_javadoccomment">     * </em>
<a class="jxr_linenumber" name="307" href="#307">307</a> <em class="jxr_javadoccomment">     * @param headers the http headers map</em>
<a class="jxr_linenumber" name="308" href="#308">308</a> <em class="jxr_javadoccomment">     * @param key the key of the header </em>
<a class="jxr_linenumber" name="309" href="#309">309</a> <em class="jxr_javadoccomment">     * @return the value of the http header</em>
<a class="jxr_linenumber" name="310" href="#310">310</a> <em class="jxr_javadoccomment">     */</em>
<a class="jxr_linenumber" name="311" href="#311">311</a>     <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">static</strong> String getSingleValuedHeader(
<a class="jxr_linenumber" name="312" href="#312">312</a>             Map&lt;String, List&lt;String&gt;&gt; headers, String key) {
<a class="jxr_linenumber" name="313" href="#313">313</a>         List&lt;String&gt; values = headers.get(key);
<a class="jxr_linenumber" name="314" href="#314">314</a> 
<a class="jxr_linenumber" name="315" href="#315">315</a>         <strong class="jxr_keyword">if</strong> (values == <strong class="jxr_keyword">null</strong>) {
<a class="jxr_linenumber" name="316" href="#316">316</a>             <strong class="jxr_keyword">return</strong> <strong class="jxr_keyword">null</strong>;
<a class="jxr_linenumber" name="317" href="#317">317</a>         }
<a class="jxr_linenumber" name="318" href="#318">318</a> 
<a class="jxr_linenumber" name="319" href="#319">319</a>         <strong class="jxr_keyword">if</strong> (values.size() &gt; 1) {
<a class="jxr_linenumber" name="320" href="#320">320</a>             <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> IllegalArgumentException(<span class="jxr_string">"Header with key [\&quot;"</span> + key
<a class="jxr_linenumber" name="321" href="#321">321</a>                     + <span class="jxr_string">"\&quot;] isn't single valued !"</span>);
<a class="jxr_linenumber" name="322" href="#322">322</a>         }
<a class="jxr_linenumber" name="323" href="#323">323</a> 
<a class="jxr_linenumber" name="324" href="#324">324</a>         <strong class="jxr_keyword">return</strong> values.get(0);
<a class="jxr_linenumber" name="325" href="#325">325</a>     }
<a class="jxr_linenumber" name="326" href="#326">326</a> 
<a class="jxr_linenumber" name="327" href="#327">327</a>     <em class="jxr_javadoccomment">/**</em>
<a class="jxr_linenumber" name="328" href="#328">328</a> <em class="jxr_javadoccomment">     * Adds an header to the provided map of headers.</em>
<a class="jxr_linenumber" name="329" href="#329">329</a> <em class="jxr_javadoccomment">     * </em>
<a class="jxr_linenumber" name="330" href="#330">330</a> <em class="jxr_javadoccomment">     * @param headers the http headers map</em>
<a class="jxr_linenumber" name="331" href="#331">331</a> <em class="jxr_javadoccomment">     * @param key the name of the new header to add</em>
<a class="jxr_linenumber" name="332" href="#332">332</a> <em class="jxr_javadoccomment">     * @param value the value of the added header</em>
<a class="jxr_linenumber" name="333" href="#333">333</a> <em class="jxr_javadoccomment">     * @param singleValued if true and the map already contains one value</em>
<a class="jxr_linenumber" name="334" href="#334">334</a> <em class="jxr_javadoccomment">     * then it is replaced by the new value. Otherwise it simply adds a new</em>
<a class="jxr_linenumber" name="335" href="#335">335</a> <em class="jxr_javadoccomment">     * value to this multi-valued header.</em>
<a class="jxr_linenumber" name="336" href="#336">336</a> <em class="jxr_javadoccomment">     */</em>
<a class="jxr_linenumber" name="337" href="#337">337</a>     <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">void</strong> addValueToHeader(Map&lt;String, List&lt;String&gt;&gt; headers,
<a class="jxr_linenumber" name="338" href="#338">338</a>             String key, String value, <strong class="jxr_keyword">boolean</strong> singleValued) {
<a class="jxr_linenumber" name="339" href="#339">339</a>         List&lt;String&gt; values = headers.get(key);
<a class="jxr_linenumber" name="340" href="#340">340</a> 
<a class="jxr_linenumber" name="341" href="#341">341</a>         <strong class="jxr_keyword">if</strong> (values == <strong class="jxr_keyword">null</strong>) {
<a class="jxr_linenumber" name="342" href="#342">342</a>             values = <strong class="jxr_keyword">new</strong> ArrayList&lt;String&gt;(1);
<a class="jxr_linenumber" name="343" href="#343">343</a>             headers.put(key, values);
<a class="jxr_linenumber" name="344" href="#344">344</a>         }
<a class="jxr_linenumber" name="345" href="#345">345</a> 
<a class="jxr_linenumber" name="346" href="#346">346</a>         <strong class="jxr_keyword">if</strong> (singleValued &amp;&amp; values.size() == 1) {
<a class="jxr_linenumber" name="347" href="#347">347</a>             values.set(0, value);
<a class="jxr_linenumber" name="348" href="#348">348</a>         } <strong class="jxr_keyword">else</strong> {
<a class="jxr_linenumber" name="349" href="#349">349</a>             values.add(value);
<a class="jxr_linenumber" name="350" href="#350">350</a>         }
<a class="jxr_linenumber" name="351" href="#351">351</a>     }
<a class="jxr_linenumber" name="352" href="#352">352</a> }
</pre>
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